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andrew11 [14]
3 years ago
5

Find distance traveled when a donkey took 20 sec to fall from a cliff at 9.8 m/s2

Physics
1 answer:
musickatia [10]3 years ago
8 0
Distance= speed * time
So multiply speed and time to get the value of distance
20*9.8 =196 meters
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A 3.00-kg pendulum is 28.84 m long. what is its period on earth?
GrogVix [38]
T=2 \pi  \sqrt{ \frac{l}{g} }
This is the period of a pendulum.  Notice the mass doesn't matter.  Plugging in your values and 9.81m/s^2 for g, gives
T=10.7731s.
7 0
4 years ago
An electron that has a velocity with x component 1.6 × 10^6 m/s and y component 2.6 × 10^6 m/s moves through a uniform magnetic
ioda

Answer:

(a)

\overrightarrow{F}=4.58\times10^{-14}\widehat{K}N

(b) \overrightarrow{F}=- 4.58\times10^{-14}\widehat{K}N

Explanation:

Vx = 1.6 x 10^6 m/s

Vy = 2.6 x 10^6 m/s

Bx = 0.024 T

By = - 0.14 T

charge of electron, q = - 1.6 x 10^-19 C

charge of proton, q = 1.6 x 10^-19 C

(a) Force on electron is given by

\overrightarrow{F}=q(\overrightarrow{V}\times \overrightarrow{B})

Substituting the values

\overrightarrow{F}=-1.6\times10^{-19}{\left ( 1.6\times 10^{6}\widehat{i}+2.6 \times 10^{6}\widehat{j} \right )\times \left ( 0.024\widehat{i}-0.14\widehat{j} \right )}

\overrightarrow{F}=4.58\times10^{-14}\widehat{K}N

(b) Force on proton is given by

\overrightarrow{F}=q(\overrightarrow{V}\times \overrightarrow{B})

Substituting the values

\overrightarrow{F}=1.6\times10^{-19}{\left ( 1.6\times 10^{6}\widehat{i}+2.6 \times 10^{6}\widehat{j} \right )\times \left ( 0.024\widehat{i}-0.14\widehat{j} \right )}

\overrightarrow{F}=- 4.58\times10^{-14}\widehat{K}N

7 0
3 years ago
What is the definition of conservation of energy
lara [203]
Energy is neither created nor destroyed; when energy is transformed from one form to another, there is no energy lost

8 0
4 years ago
Read 2 more answers
Most towns use a water tower to store water and provide pressure in the pipes that deliver water to customers. The figure below
MatroZZZ [7]

The effective height of the water for Smith's house will be 24.61m.

<h3>How to calculate the height?</h3>

Based on the information given, the volume of the water in sphere will be:

= 4/3πr³ = (5.80 × 10^5)/1000

= 4.18r³ = 580

r³ = 138.7

r = 5.18m

The effective height of the water will be:

= 18.0 + 2(5.18)

= 28.36

The gauge pressure at Faucet of Jones house will be:

= pgh

= 1000(9.8)(28.36)

= 277.9kPa

The effective height of the water for Smith's house will be:

= 18.0 + 2(5.18) - 3.75

= 24.61m

The gauge pressure at Faucet of Jones house will be:

= 1000 × 9.8 × 24.61

= 241.2kPa

Learn more about height on:

brainly.com/question/983412

#SPJ1

8 0
2 years ago
Can the validity of a model be limited, or must it be universally valid? How does this compare to the required validity of a the
Vilka [71]

The model is based on hypothesis  to get an initial idea for analyzing a complex problem. Hence, the validity of a model is limited and may not be valid universally. On the other hand, theories and laws are confirmed hypothesis which are universally valid. These are formulated after repeated testings. theories are more explanatory.

7 0
3 years ago
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